14005131521 has 8 divisors (see below), whose sum is σ = 14213695104. Its totient is φ = 13798052800.

The previous prime is 14005131499. The next prime is 14005131529. The reversal of 14005131521 is 12513150041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14005131521 - 2¹⁰ = 14005130497 is a prime.

It is a super-2 number, since 2×14005131521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14005131529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352205 + ... + 389946.

It is an arithmetic number, because the mean of its divisors is an integer number (1776711888).

Almost surely, 2^14005131521 is an apocalyptic number.

It is an amenable number.

14005131521 is a deficient number, since it is larger than the sum of its proper divisors (208563583).

14005131521 is a wasteful number, since it uses less digits than its factorization.

14005131521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742431.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 14005131521 its reverse (12513150041), we get a palindrome (26518281562).

The spelling of 14005131521 in words is "fourteen billion, five million, one hundred thirty-one thousand, five hundred twenty-one".